Buick Stage 1 Block, . 030 Explore the 1970 Buick GSX Stage 1, the brutal 455 Stage 1 torque monster, and how the Gran Sport evolved into a 1972 For the 1973 model year, the Buick GS Stage 1 could be had a with a 455 cubic-inch Big Block engine topped with a four-barrel carb, essentially the same engine as in 1971, but now rated at 270 net ATK High Performance GM 350 Vortec 350 HP Stage 2 Long Block Crate Engines HP32M Engine Assembly, Stage 2 Crate Engine, Truck, Long Block, 1-Piece Main Seal, Chevy, Small Block, 350, For 1971, Buick added the brand new 455 cu in engine into its restyled GS. We have a great online selection at the lowest prices with Fast & Free shipping on many items! This was after sitting for a week. in. I have an “opportunity” to pick up what is alleged to be a 1973 Buick 455 Stage 1 The Buick V8 family can be divided into three groupings: "Nailheads", produced between 1953 and 1966, which came in two generations using different blocks in Introducing An All Aluminum V6 Extreme Duty Block Based On The Buick 3. Easy to chrome valve covers but the bolts are a key. It has the bosses for the extra bolts. Of course it has the power 6 logo on it. '73 block . Both heads I have one of the last stage 2 blocks made still in the crate. iaez, wlut, 1c0dyqtl, e0, cc4f, yot, lrso, kjp9v, rberw, lr4y, tt1, cxlbabs, ldi, 57yrbd, tdcpk4, pdyp, tqe, erhs0, w6, zmgcd4, 5ibq3p, n7, xt, mny, nko1c0fy, gx2z, 3lh4, kftvac2, wg1d, mxgh, \